中国电力 ›› 2014, Vol. 47 ›› Issue (4): 9-13.DOI: 10.11930/j.issn.1004-9649.2014.4.9.4

• 专稿 • 上一篇    下一篇

喷丸处理对S30432锅炉管抗蒸汽氧化性能的影响

赵慧传1, 唐丽英2, 贾建民2, 孙标3, 王彩侠2, 陈吉刚2   

  1. 1. 中国神华国华电力分公司,北京 100025;
    2. 西安热工研究院有限公司,陕西 西安 710032;
    3. 神华国华(北京)电力研究院有限公司,北京 100025
  • 收稿日期:2013-12-21 出版日期:2014-04-30 发布日期:2015-12-22
  • 作者简介:赵慧传(1963-),男,吉林东丰人,高级工程师(教授级),从事火电厂高温金属材料性能研究、金属承压部件检验检测与失效分析、锅炉管蒸汽侧氧化特性研究及防治等工作。E-mail: zhaohc66@126.com

Influences of Shot Blasting on Steam Oxidation Resistance of S30432 Boiler Tubes

ZHAO Hui-chuan1, TANG Li-ying2, JIA Jian-min2, SUN Biao3, WANG Cai-xia2, CHEN Ji-gang2   

  1. 1. China Shenhua Energy Guohua Branch, Beijing 100025, China;
    2. Xi’an Thermal Power Research Institute Co. Ltd.,Xi’an 710032, China;
    3. Shenhua GuoHua (Beijing) Electric Power Research Institute Co. Ltd., Beijing 100025, China
  • Received:2013-12-21 Online:2014-04-30 Published:2015-12-22

摘要: 对喷丸和未喷丸的国产和进口S30432钢管试样分别进行了670 、730 、760和790 ℃各1 000 h蒸汽氧化试验,并对蒸汽氧化试验后的试样进行了宏观、氧化增重、金相等试验分析。结果表明,喷丸处理可以显著提高S30432锅炉管内壁的抗蒸汽氧化性能,约可使氧化速率降低一个数量级;在1 000 h蒸汽氧化试验条件下,1号试样氧化皮快速生长的临界温度在730~760 ℃,3号试样氧化皮快速生长的临界温度在760~790 ℃。进口管样氧化膜快速生长的临界温度比国产管样高约30 ℃,抗蒸汽氧化能力更强。

关键词: 锅炉, S30432钢, 蒸汽氧化, 喷丸处理, 临界温度

Abstract: The 1 000-hour steam oxidation test was carried out on the domestic and imported, with and without shot blasting S30432 steel tube samples at temperatures of 670 ℃, 730 ℃, 760 ℃ and 790 ℃, respectively. The analysis in respect of macroscopical quality, oxidation weigh gain and metallographic performance was also conducted on the samples after the test. The test results show that shot blasting on the tube inner surface can significantly improve the steam oxidation resistance of the S30432 boiler tubes, and the oxidation rate can be decreased by about an order of magnitude. In the test condition of 1 000-hour steam oxidation, the critical temperature of rapid oxide skin growth ranges between 730 ℃ and 760 ℃ for Sample 1 and between 760 ℃ and 790 ℃ for Sample 3. The critical temperature of imported tube samples is 30 ℃ higher than that of the domestic tube samples, which indicates the better steam oxidation resistance.

Key words: boiler, S30432 steel, steam oxidation, shot blasting, critical temperature

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